/* ==========================================================================
   Peal — design tokens & base system
   ========================================================================== */

:root {
	--peal-charcoal:       #1b1613;
	--peal-charcoal-soft:  #241d18;
	--peal-charcoal-deep:  #120d0b;
	--peal-ink:            #f3ece0;
	--peal-ink-soft:       #cabfae;
	--peal-ink-faint:      #8f8474;

	--peal-bronze:         #b8763f;
	--peal-bronze-deep:    #8a5527;
	--peal-bronze-pale:    rgba(184, 118, 63, 0.16);
	--peal-brass:          #d9b168;
	--peal-verdigris:      #5b8a72;
	--peal-verdigris-deep: #3f6350;
	--peal-verdigris-pale: rgba(91, 138, 114, 0.16);

	--peal-line:      rgba(243, 236, 224, 0.12);
	--peal-line-soft: rgba(243, 236, 224, 0.07);
	--peal-glass-bg:  rgba(36, 29, 24, 0.72);

	--font-display: 'Petrona', Georgia, serif;
	--font-body:    'Albert Sans', -apple-system, BlinkMacSystemFont, sans-serif;

	/* Base 16px x 1.25 (major third). */
	--fs-100: 1rem;       /* 16 */
	--fs-200: 1.25rem;    /* 20 */
	--fs-300: 1.5625rem;  /* 25 */
	--fs-400: 1.953rem;   /* 31 */
	--fs-500: 2.441rem;   /* 39 */
	--fs-600: 3.052rem;   /* 49 */
	--fs-700: 3.815rem;   /* 61 */

	--radius-sm: 10px;
	--radius-md: 16px;
	--radius-lg: 26px;

	--shadow-soft: 0 14px 34px -16px rgba(0, 0, 0, 0.55);
	--shadow-lift: 0 26px 60px -20px rgba(0, 0, 0, 0.65);

	color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
	margin: 0;
	overflow-x: hidden;
	background: var(--peal-charcoal);
	color: var(--peal-ink);
	font-family: var(--font-body);
	font-size: var(--fs-100);
	line-height: 1.55;
	-webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
	font-family: var(--font-display);
	font-weight: 600;
	line-height: 1.12;
	margin: 0 0 0.6em;
	text-wrap: balance;
}
h1 { font-size: var(--fs-700); }
h2 { font-size: var(--fs-500); }
h3 { font-size: var(--fs-400); }
h4 { font-size: var(--fs-300); }
p  { margin: 0 0 1em; color: var(--peal-ink-soft); max-width: 68ch; }

.eyebrow {
	font-family: var(--font-body);
	font-size: 0.82rem;
	font-weight: 700;
	letter-spacing: 0.11em;
	text-transform: uppercase;
	color: var(--peal-brass);
	display: block;
	margin-bottom: 0.7rem;
}

.wrap { max-width: 1180px; margin-inline: auto; padding-inline: 1.5rem; }
.skip-link {
	position: absolute; left: -9999px; top: 0; z-index: 1000;
	background: var(--peal-bronze); color: #1b1613; padding: 0.8rem 1.2rem; border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

/* ---------- Buttons ---------- */
.btn {
	display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
	padding: 0.85rem 1.6rem; border-radius: 999px; font-weight: 700; font-size: 0.95rem;
	border: 1.5px solid transparent; transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
	cursor: pointer; font-family: var(--font-body);
}
.btn:hover { transform: translateY(-2px); }
.btn--bronze { background: var(--peal-bronze); color: #1b1613; box-shadow: var(--shadow-soft); }
.btn--bronze:hover { background: var(--peal-brass); box-shadow: var(--shadow-lift); }
.btn--outline { background: transparent; border-color: var(--peal-ink-soft); color: var(--peal-ink); }
.btn--outline:hover { border-color: var(--peal-brass); color: var(--peal-brass); }
.btn--verdigris { background: var(--peal-verdigris); color: #0e1a15; }
.btn--verdigris:hover { background: #6ea082; }
.btn--large { padding: 1.05rem 2rem; font-size: 1.02rem; }
.btn--small { padding: 0.5rem 1.1rem; font-size: 0.84rem; }
.btn.is-loading { opacity: 0.65; pointer-events: none; }

/* ---------- Persistent Chladni-mode WebGL2 scene ---------- */
.peal-scene-stage {
	position: fixed; inset: 0; z-index: 0; overflow: hidden; background: var(--peal-charcoal);
}
.peal-scene-stage canvas {
	position: absolute; inset: 0; width: 100%; height: 100%; display: block;
	opacity: 0; transition: opacity 1s ease;
}
.peal-scene-stage.is-ready canvas { opacity: 1; }
.peal-scene-fallback {
	position: absolute; inset: 0;
	background:
		radial-gradient(ellipse 60% 50% at 50% 42%, rgba(184,118,63,0.16), transparent 70%),
		radial-gradient(ellipse 80% 60% at 50% 100%, rgba(91,138,114,0.10), transparent 70%),
		var(--peal-charcoal);
}
.peal-scene-stage.is-ready .peal-scene-fallback { display: none; }

.peal-page { position: relative; z-index: 1; }

/* ---------- Header ---------- */
.site-header {
	position: sticky; top: 0; z-index: 40;
	background: rgba(27, 22, 19, 0.78); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
	border-bottom: 1px solid var(--peal-line-soft);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; padding-block: 1rem; }
.brand { display: flex; align-items: center; gap: 0.7rem; }
.brand__mark { color: var(--peal-brass); display: inline-flex; }
.brand__text { font-family: var(--font-display); font-size: 1.3rem; font-weight: 600; display: flex; flex-direction: column; line-height: 1.15; }
.brand__text small { font-family: var(--font-body); font-size: 0.68rem; font-weight: 500; letter-spacing: 0.05em; color: var(--peal-ink-faint); text-transform: uppercase; }

.nav { display: flex; align-items: center; gap: 1.6rem; }
.nav ul { list-style: none; display: flex; align-items: center; gap: 1.9rem; margin: 0; padding: 0; }
.nav a:not(.btn) { font-weight: 600; font-size: 0.95rem; position: relative; padding-block: 0.3rem; color: var(--peal-ink-soft); }
.nav a:not(.btn):hover, .nav a:not(.btn):focus-visible { color: var(--peal-ink); }
.nav a:not(.btn)::after { content: ''; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px; background: var(--peal-brass); transform: scaleX(0); transform-origin: left; transition: transform 0.25s ease; }
.nav a:not(.btn):hover::after, .nav a:not(.btn):focus-visible::after { transform: scaleX(1); }
.nav__cta { margin-left: 0.3rem; }

.header-actions { display: none; }
.nav-toggle {
	display: none; flex-direction: column; justify-content: center; gap: 5px;
	width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--peal-line); background: var(--peal-charcoal-soft);
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--peal-ink); margin-inline: auto; transition: transform 0.25s ease, opacity 0.25s ease; }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 92vh; display: flex; align-items: center; padding-block: 6rem 3rem; }
.hero__inner { max-width: 720px; }
.hero__title { margin-bottom: 0.6rem; }
.hero__sub { font-size: 1.12rem; max-width: 560px; margin-bottom: 1.9rem; }
.hero__actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 2.4rem; }
.hero__hud {
	display: flex; gap: 1.4rem; flex-wrap: wrap; font-size: 0.82rem; color: var(--peal-ink-soft);
	background: var(--peal-glass-bg); backdrop-filter: blur(10px); border: 1px solid var(--peal-line);
	border-radius: 999px; padding: 0.6rem 1.2rem; width: fit-content;
}
.hero__hud strong { color: var(--peal-brass); font-weight: 700; }
.hero__scroll-cue {
	position: absolute; left: 1.5rem; bottom: 2rem; display: flex; align-items: center; gap: 0.5rem;
	font-size: 0.78rem; letter-spacing: 0.06em; color: var(--peal-ink-faint);
	transform: rotate(180deg); writing-mode: vertical-rl;
}
.hero__scroll-cue svg { transform: rotate(180deg); }

/* ---------- Reveal animation ---------- */
[data-reveal], [data-reveal-stagger] {
	opacity: 0; transform: translateY(22px);
	transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1);
}
[data-reveal].is-visible, [data-reveal-stagger].is-visible { opacity: 1; transform: translateY(0); }
[data-reveal-stagger] { transition-delay: calc(var(--stagger-i, 0) * 80ms); }

/* ---------- Sections ---------- */
.section { padding-block: 6.5rem; position: relative; }
.section--narrow .wrap, .section--narrow { max-width: 760px; }
.section--muted { background: var(--peal-charcoal-soft); border-block: 1px solid var(--peal-line-soft); }
.section-head { max-width: 640px; margin-bottom: 2.6rem; }
.section-cta { margin-top: 2.4rem; }

.glass-panel {
	background: var(--peal-glass-bg); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
	border: 1px solid var(--peal-line); border-radius: var(--radius-lg); box-shadow: var(--shadow-soft);
}

/* ---------- Stats ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
.stat-card { padding: 1.6rem 1.2rem; text-align: center; }
.stat-card__num { display: block; font-family: var(--font-display); font-size: var(--fs-500); color: var(--peal-brass); font-weight: 600; }
.stat-card__label { display: block; font-size: 0.82rem; color: var(--peal-ink-soft); margin-top: 0.4rem; }

/* ---------- Bell / Installation cards ---------- */
.img-slot {
	position: relative; display: flex; align-items: center; justify-content: center;
	background: linear-gradient(135deg, var(--peal-bronze-pale), var(--peal-verdigris-pale));
	color: var(--peal-brass); border-radius: var(--radius-md); overflow: hidden; aspect-ratio: 4/3;
}
.img-slot--wide { aspect-ratio: 16/9; }
.img-slot--hero { aspect-ratio: 21/9; border-radius: var(--radius-lg); }
.img-slot__glyph { opacity: 0.55; }
.img-slot__img { width: 100%; height: 100%; object-fit: cover; }

.bell-grid, .installation-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; margin-top: 1rem; }
.bell-card {
	background: var(--peal-charcoal-soft); border: 1px solid var(--peal-line); border-radius: var(--radius-lg);
	overflow: hidden; box-shadow: var(--shadow-soft); transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.bell-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lift); }
.bell-card__thumb img, .bell-card__thumb { aspect-ratio: 4/3; width: 100%; object-fit: cover; }
.bell-card__body { padding: 1.5rem; }
.bell-card__note { display: inline-flex; padding: 0.35rem 0.8rem; background: var(--peal-bronze-pale); color: var(--peal-brass); border-radius: 999px; font-weight: 700; font-size: 0.8rem; margin-bottom: 0.8rem; }
.bell-card__title { margin-bottom: 0.4rem; }
.bell-card__summary { color: var(--peal-ink-soft); font-size: 0.95rem; }
.bell-card__spec { display: flex; gap: 1.1rem; flex-wrap: wrap; font-size: 0.8rem; color: var(--peal-ink-faint); margin-top: 0.9rem; }
.bell-card__spec strong { color: var(--peal-ink-soft); font-weight: 700; }
.bell-card__cta { display: inline-flex; align-items: center; gap: 0.4rem; font-weight: 700; color: var(--peal-brass); font-size: 0.88rem; margin-top: 1rem; }

/* ---------- Calculator ---------- */
.calc {
	display: grid; grid-template-columns: 1fr 1fr; gap: 2.4rem; padding: 2.2rem;
}
.calc__controls { display: flex; flex-direction: column; gap: 1.4rem; }
.calc__field label { display: flex; justify-content: space-between; font-size: 0.85rem; font-weight: 700; margin-bottom: 0.5rem; color: var(--peal-ink-soft); }
.calc__field label output { color: var(--peal-brass); font-family: var(--font-display); }
.calc__field input[type="range"] {
	width: 100%; accent-color: var(--peal-bronze); height: 6px;
}
.calc__field select {
	width: 100%; padding: 0.6rem 0.8rem; border-radius: var(--radius-sm); background: var(--peal-charcoal);
	border: 1px solid var(--peal-line); color: var(--peal-ink); font-family: var(--font-body);
}
.calc__partials { display: flex; flex-direction: column; gap: 0.7rem; }
.calc__partial { display: flex; align-items: center; justify-content: space-between; padding: 0.7rem 1rem; background: var(--peal-charcoal); border-radius: var(--radius-sm); border: 1px solid var(--peal-line-soft); }
.calc__partial-name { font-size: 0.85rem; color: var(--peal-ink-soft); }
.calc__partial-hz { font-family: var(--font-display); font-size: 1.1rem; color: var(--peal-brass); }
.calc__note-result { text-align: center; padding: 1.2rem; }
.calc__note-result .note-big { font-family: var(--font-display); font-size: var(--fs-600); color: var(--peal-ink); }
.calc__note-result .note-hz { color: var(--peal-ink-faint); font-size: 0.85rem; }

/* ---------- Methods diagram ---------- */
.methods-panel { padding: 2.2rem; }
.methods-panel svg { width: 100%; height: auto; display: block; }
.methods-controls { display: flex; align-items: center; gap: 1rem; margin-top: 1.4rem; flex-wrap: wrap; }
.methods-controls select { padding: 0.5rem 0.8rem; border-radius: var(--radius-sm); background: var(--peal-charcoal); border: 1px solid var(--peal-line); color: var(--peal-ink); }

/* ---------- Process ---------- */
.process-list { display: flex; flex-direction: column; gap: 0; margin-top: 2rem; }
.process-step { display: grid; grid-template-columns: 60px 1fr; gap: 1.4rem; padding-block: 1.6rem; border-top: 1px solid var(--peal-line-soft); }
.process-step:last-child { border-bottom: 1px solid var(--peal-line-soft); }
.process-step__num { font-family: var(--font-display); font-size: var(--fs-300); color: var(--peal-bronze); }
.process-step__title { margin-bottom: 0.4rem; }

/* ---------- Testimonials ---------- */
.testimonial-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.6rem; margin-top: 1.5rem; }
.testimonial-card { padding: 1.8rem; }
.testimonial-card__quote { font-family: var(--font-display); font-size: 1.15rem; font-style: italic; color: var(--peal-ink); margin-bottom: 1rem; }
.testimonial-card__attr { font-size: 0.85rem; color: var(--peal-ink-faint); }

/* ---------- Forms ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.form-field { display: flex; flex-direction: column; gap: 0.4rem; }
.form-field--full { grid-column: 1 / -1; }
.form-field label { font-size: 0.85rem; font-weight: 700; color: var(--peal-ink-soft); }
.form-field input, .form-field select, .form-field textarea {
	padding: 0.75rem 0.9rem; border-radius: var(--radius-sm); border: 1px solid var(--peal-line);
	background: var(--peal-charcoal); color: var(--peal-ink); font-family: var(--font-body); font-size: 0.95rem;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { outline: 2px solid var(--peal-bronze); outline-offset: 1px; }
.form-field textarea { resize: vertical; min-height: 100px; }
.form-honeypot { position: absolute; left: -9999px; }
.form-status { margin-top: 1rem; font-size: 0.9rem; }
.form-status.is-error { color: #e5866b; }
.form-status.is-success { color: var(--peal-verdigris); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--peal-line-soft); padding-block: 3.5rem 2.2rem; background: var(--peal-charcoal-deep); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2.4rem; margin-bottom: 2.6rem; }
.footer-col h4 { font-size: 0.9rem; color: var(--peal-ink); margin-bottom: 1rem; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col a { color: var(--peal-ink-soft); font-size: 0.9rem; }
.footer-col a:hover { color: var(--peal-brass); }
.footer-brand__mark { color: var(--peal-brass); display: inline-flex; margin-bottom: 0.6rem; }
.footer-brand__text { font-family: var(--font-display); font-size: 1.25rem; font-weight: 600; color: var(--peal-ink); }
.footer-brand__desc { color: var(--peal-ink-faint); font-size: 0.88rem; margin-top: 0.8rem; max-width: 32ch; }
.footer-contact p { margin: 0 0 0.4rem; color: var(--peal-ink-soft); font-size: 0.9rem; }
.footer-contact__hours { color: var(--peal-ink-faint); font-size: 0.82rem; }
.mt-2 { margin-top: 0.8rem; }
.footer-social { display: flex; gap: 0.7rem; margin-top: 1rem; }
.footer-social a { display: inline-flex; padding: 0.5rem; border: 1px solid var(--peal-line); border-radius: 999px; color: var(--peal-ink-soft); }
.footer-social a:hover { color: var(--peal-brass); border-color: var(--peal-brass); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 2rem; border-top: 1px solid var(--peal-line-soft); font-size: 0.82rem; color: var(--peal-ink-faint); flex-wrap: wrap; gap: 0.8rem; }

/* ---------- 404 / search / page-hero ---------- */
.page-hero { padding-block: 8rem 3rem; }
.page-hero__desc { max-width: 620px; }
.back-link { display: inline-flex; align-items: center; gap: 0.4rem; font-weight: 700; font-size: 0.85rem; color: var(--peal-verdigris); margin-bottom: 1.2rem; }
.back-link svg { transform: rotate(180deg); }

/* ---------- Comments ---------- */
.comment-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 1.2rem; }
.comment-body { padding: 1.2rem 1.4rem; background: var(--peal-charcoal-soft); border-radius: var(--radius-md); border: 1px solid var(--peal-line-soft); }
.comment-meta { font-size: 0.82rem; color: var(--peal-ink-faint); margin-bottom: 0.5rem; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
	.stat-grid { grid-template-columns: repeat(2, 1fr); }
	.bell-grid, .installation-grid { grid-template-columns: repeat(2, 1fr); }
	.calc { grid-template-columns: 1fr; }
	.form-grid { grid-template-columns: 1fr; }
	.testimonial-grid { grid-template-columns: 1fr; }
	.footer-grid { grid-template-columns: 1fr 1fr; }

	/* Nav collapses to a hamburger well above the classic 680px phone
	   breakpoint: with "Bells / Installations / Methods / About" plus a
	   CTA, the inline nav genuinely overflows and forces horizontal page
	   scroll anywhere under ~960px, not just on phones. */
	.nav { position: fixed; inset: 0 0 0 30%; top: 68px; background: var(--peal-charcoal); flex-direction: column; align-items: flex-start; padding: 2rem 1.5rem; transform: translateX(100%); transition: transform 0.3s ease; border-left: 1px solid var(--peal-line); overflow-y: auto; }
	.nav.is-open { transform: translateX(0); }
	.nav ul { flex-direction: column; align-items: flex-start; gap: 1.2rem; width: 100%; }
	.nav__cta { margin-left: 0; }
	.header-actions { display: block; }
	.nav-toggle { display: flex; }
}

@media (max-width: 680px) {
	:root { --fs-700: 2.6rem; --fs-600: 2.2rem; --fs-500: 1.9rem; }
	.hero { min-height: 86vh; padding-block: 7rem 3rem; }
	.bell-grid, .installation-grid { grid-template-columns: 1fr; }
	.stat-grid { grid-template-columns: 1fr 1fr; }
	.footer-grid { grid-template-columns: 1fr; gap: 1.8rem; }
	.footer-bottom { flex-direction: column; align-items: flex-start; }
	.process-step { grid-template-columns: 1fr; gap: 0.4rem; }
}